Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
110017excellentexcellent31excellent
100020excellentexcellent41excellent
090023goodexcellent41excellent
080032goodexcellent61excellent
070042goodexcellent71excellent
060040goodexcellent71excellent
050037goodexcellent61excellent
040037goodexcellent61excellent
030040goodexcellent61excellent
020056goodexcellent71excellent
010058goodexcellent81excellent
000056goodexcellent81excellent
230059goodexcellent71excellent
220053goodexcellent51excellent
210035goodexcellent51excellent
200027goodexcellent61excellent
190025goodexcellent51excellent
180013excellentexcellent31excellent
170012excellentexcellent21excellent
16009excellentexcellent21excellent
150011excellentexcellent21excellent
140011excellentexcellent21excellent
13009excellentexcellent21excellent
120014excellentexcellent21excellent